chore(deps): bump express from 4.19.2 to 4.21.1

Bumps [express](https://github.com/expressjs/express) from 4.19.2 to 4.21.1.
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/4.21.1/History.md)
- [Commits](expressjs/express@4.19.2...4.21.1)

---
updated-dependencies:
- dependency-name: express
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -61,7 +61,7 @@
     "@bugsnag/js": "^7.25.0",
     "body-parser": "^1.20.2",
     "bunyan": "^1.8.15",
-    "express": "^4.19.2",
+    "express": "^4.21.1",
     "express-promise-router": "^4.1.1",
     "joi": "^17.12.3",
     "lodash": "^4.17.21",